summaryrefslogtreecommitdiff
path: root/src/mesa/pipe
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/pipe')
-rw-r--r--src/mesa/pipe/p_state.h1
-rw-r--r--src/mesa/pipe/softpipe/sp_context.h2
-rw-r--r--src/mesa/pipe/softpipe/sp_headers.h1
-rw-r--r--src/mesa/pipe/softpipe/sp_prim_setup.c339
-rw-r--r--src/mesa/pipe/softpipe/sp_quad_earlyz.c6
-rw-r--r--src/mesa/pipe/softpipe/sp_quad_fs.c68
-rw-r--r--src/mesa/pipe/softpipe/sp_state_derived.c12
-rw-r--r--src/mesa/pipe/tgsi/exec/tgsi_exec.c27
-rw-r--r--src/mesa/pipe/tgsi/exec/tgsi_exec.h2
9 files changed, 279 insertions, 179 deletions
diff --git a/src/mesa/pipe/p_state.h b/src/mesa/pipe/p_state.h
index 4e42838f1d..43b710ff3b 100644
--- a/src/mesa/pipe/p_state.h
+++ b/src/mesa/pipe/p_state.h
@@ -139,6 +139,7 @@ struct pipe_shader_state {
const struct tgsi_token *tokens;
ubyte num_inputs;
ubyte num_outputs;
+ ubyte input_map[PIPE_MAX_SHADER_INPUTS]; /* XXX this may be temporary */
ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS]; /**< TGSI_SEMANTIC_x */
ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
ubyte output_semantic_name[PIPE_MAX_SHADER_OUTPUTS]; /**< TGSI_SEMANTIC_x */
diff --git a/src/mesa/pipe/softpipe/sp_context.h b/src/mesa/pipe/softpipe/sp_context.h
index 2c038de5f7..8fd44933f2 100644
--- a/src/mesa/pipe/softpipe/sp_context.h
+++ b/src/mesa/pipe/softpipe/sp_context.h
@@ -110,8 +110,6 @@ struct softpipe_context {
struct vertex_info vertex_info;
unsigned attr_mask;
unsigned nr_frag_attrs; /**< number of active fragment attribs */
- boolean need_z; /**< produce quad/fragment Z values? */
- boolean need_w; /**< produce quad/fragment W values? */
int psize_slot;
#if 0
diff --git a/src/mesa/pipe/softpipe/sp_headers.h b/src/mesa/pipe/softpipe/sp_headers.h
index b9f2b2205a..0ae31d8796 100644
--- a/src/mesa/pipe/softpipe/sp_headers.h
+++ b/src/mesa/pipe/softpipe/sp_headers.h
@@ -73,6 +73,7 @@ struct quad_header {
float coverage[QUAD_SIZE]; /** fragment coverage for antialiasing */
const struct tgsi_interp_coef *coef;
+ const struct tgsi_interp_coef *posCoef;
unsigned nr_attrs;
};
diff --git a/src/mesa/pipe/softpipe/sp_prim_setup.c b/src/mesa/pipe/softpipe/sp_prim_setup.c
index fc96f92af1..8d8dceadc5 100644
--- a/src/mesa/pipe/softpipe/sp_prim_setup.c
+++ b/src/mesa/pipe/softpipe/sp_prim_setup.c
@@ -36,10 +36,12 @@
#include "sp_context.h"
#include "sp_headers.h"
#include "sp_quad.h"
+#include "sp_state.h"
#include "sp_prim_setup.h"
#include "pipe/draw/draw_private.h"
#include "pipe/draw/draw_vertex.h"
#include "pipe/p_util.h"
+#include "pipe/p_shader_tokens.h"
#define DEBUG_VERTS 0
@@ -80,8 +82,11 @@ struct setup_stage {
float oneoverarea;
struct tgsi_interp_coef coef[PIPE_MAX_SHADER_INPUTS];
+ struct tgsi_interp_coef posCoef; /* For Z, W */
struct quad_header quad;
+ uint firstFpInput; /** Semantic type of first frag input */
+
struct {
int left[2]; /**< [0] = row0, [1] = row1 */
int right[2];
@@ -365,18 +370,17 @@ static boolean setup_sort_vertices( struct setup_stage *setup,
* \param i which component of the slot (0..3)
*/
static void const_coeff( struct setup_stage *setup,
- unsigned slot,
- unsigned i )
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- assert(slot < PIPE_MAX_SHADER_INPUTS);
assert(i <= 3);
- setup->coef[slot].dadx[i] = 0;
- setup->coef[slot].dady[i] = 0;
+ coef->dadx[i] = 0;
+ coef->dady[i] = 0;
/* need provoking vertex info!
*/
- setup->coef[slot].a0[i] = setup->vprovoke->data[slot][i];
+ coef->a0[i] = setup->vprovoke->data[vertSlot][i];
}
@@ -385,19 +389,20 @@ static void const_coeff( struct setup_stage *setup,
* for a triangle.
*/
static void tri_linear_coeff( struct setup_stage *setup,
- unsigned slot,
- unsigned i)
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- float botda = setup->vmid->data[slot][i] - setup->vmin->data[slot][i];
- float majda = setup->vmax->data[slot][i] - setup->vmin->data[slot][i];
+ float botda = setup->vmid->data[vertSlot][i] - setup->vmin->data[vertSlot][i];
+ float majda = setup->vmax->data[vertSlot][i] - setup->vmin->data[vertSlot][i];
float a = setup->ebot.dy * majda - botda * setup->emaj.dy;
float b = setup->emaj.dx * botda - majda * setup->ebot.dx;
-
- assert(slot < PIPE_MAX_SHADER_INPUTS);
+ float dadx = a * setup->oneoverarea;
+ float dady = b * setup->oneoverarea;
+
assert(i <= 3);
- setup->coef[slot].dadx[i] = a * setup->oneoverarea;
- setup->coef[slot].dady[i] = b * setup->oneoverarea;
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
/* calculate a0 as the value which would be sampled for the
* fragment at (0,0), taking into account that we want to sample at
@@ -411,9 +416,9 @@ static void tri_linear_coeff( struct setup_stage *setup,
* to define a0 as the sample at a pixel center somewhere near vmin
* instead - i'll switch to this later.
*/
- setup->coef[slot].a0[i] = (setup->vmin->data[slot][i] -
- (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5f) +
- setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5f)));
+ coef->a0[i] = (setup->vmin->data[vertSlot][i] -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
/*
_mesa_printf("attr[%d].%c: %f dx:%f dy:%f\n",
@@ -434,39 +439,68 @@ static void tri_linear_coeff( struct setup_stage *setup,
* divide the interpolated value by the interpolated W at that fragment.
*/
static void tri_persp_coeff( struct setup_stage *setup,
- unsigned slot,
- unsigned i )
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- /* premultiply by 1/w:
+ /* premultiply by 1/w (v->data[0][3] is always W):
*/
- float mina = setup->vmin->data[slot][i] * setup->vmin->data[0][3];
- float mida = setup->vmid->data[slot][i] * setup->vmid->data[0][3];
- float maxa = setup->vmax->data[slot][i] * setup->vmax->data[0][3];
-
+ float mina = setup->vmin->data[vertSlot][i] * setup->vmin->data[0][3];
+ float mida = setup->vmid->data[vertSlot][i] * setup->vmid->data[0][3];
+ float maxa = setup->vmax->data[vertSlot][i] * setup->vmax->data[0][3];
float botda = mida - mina;
float majda = maxa - mina;
float a = setup->ebot.dy * majda - botda * setup->emaj.dy;
float b = setup->emaj.dx * botda - majda * setup->ebot.dx;
+ float dadx = a * setup->oneoverarea;
+ float dady = b * setup->oneoverarea;
/*
- printf("tri persp %d,%d: %f %f %f\n", slot, i,
- setup->vmin->data[slot][i],
- setup->vmid->data[slot][i],
- setup->vmax->data[slot][i]
+ printf("tri persp %d,%d: %f %f %f\n", vertSlot, i,
+ setup->vmin->data[vertSlot][i],
+ setup->vmid->data[vertSlot][i],
+ setup->vmax->data[vertSlot][i]
);
*/
-
- assert(slot < PIPE_MAX_SHADER_INPUTS);
assert(i <= 3);
- setup->coef[slot].dadx[i] = a * setup->oneoverarea;
- setup->coef[slot].dady[i] = b * setup->oneoverarea;
- setup->coef[slot].a0[i] = (mina -
- (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5f) +
- setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5f)));
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
+ coef->a0[i] = (mina -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
+}
+
+
+/**
+ * Special coefficient setup for gl_FragCoord.
+ * X and Y are trivial, though Y has to be inverted for OpenGL.
+ * Z and W are copied from posCoef which should have already been computed.
+ * We could do a bit less work if we'd examine gl_FragCoord's swizzle mask.
+ */
+static void
+setup_fragcoord_coeff(struct setup_stage *setup)
+{
+ const int winHeight = setup->softpipe->framebuffer.cbufs[0]->height;
+ /*X*/
+ setup->coef[0].a0[0] = 0;
+ setup->coef[0].dadx[0] = 1.0;
+ setup->coef[0].dady[0] = 0.0;
+ /*Y*/
+ setup->coef[0].a0[1] = winHeight - 1;
+ setup->coef[0].dadx[1] = 0.0;
+ setup->coef[0].dady[1] = -1.0;
+ /*Z*/
+ setup->coef[0].a0[2] = setup->posCoef.a0[2];
+ setup->coef[0].dadx[2] = setup->posCoef.dadx[2];
+ setup->coef[0].dady[2] = setup->posCoef.dady[2];
+ /*w*/
+ setup->coef[0].a0[3] = setup->posCoef.a0[3];
+ setup->coef[0].dadx[3] = setup->posCoef.dadx[3];
+ setup->coef[0].dady[3] = setup->posCoef.dady[3];
}
+
/**
* Compute the setup->coef[] array dadx, dady, a0 values.
* Must be called after setup->vmin,vmid,vmax,vprovoke are initialized.
@@ -474,36 +508,67 @@ static void tri_persp_coeff( struct setup_stage *setup,
static void setup_tri_coefficients( struct setup_stage *setup )
{
const enum interp_mode *interp = setup->softpipe->vertex_info.interp_mode;
- unsigned slot, j;
+#define USE_INPUT_MAP 0
+#if USE_INPUT_MAP
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
+#endif
+ uint fragSlot;
/* z and w are done by linear interpolation:
*/
- tri_linear_coeff(setup, 0, 2);
- tri_linear_coeff(setup, 0, 3);
+ tri_linear_coeff(setup, &setup->posCoef, 0, 2);
+ tri_linear_coeff(setup, &setup->posCoef, 0, 3);
/* setup interpolation for all the remaining attributes:
*/
- for (slot = 1; slot < setup->quad.nr_attrs; slot++) {
- switch (interp[slot]) {
- case INTERP_CONSTANT:
- for (j = 0; j < NUM_CHANNELS; j++)
- const_coeff(setup, slot, j);
- break;
-
- case INTERP_LINEAR:
- for (j = 0; j < NUM_CHANNELS; j++)
- tri_linear_coeff(setup, slot, j);
- break;
-
- case INTERP_PERSPECTIVE:
- for (j = 0; j < NUM_CHANNELS; j++)
- tri_persp_coeff(setup, slot, j);
- break;
-
- default:
- /* invalid interp mode */
- assert(0);
+ for (fragSlot = 0; fragSlot < setup->quad.nr_attrs; fragSlot++) {
+ /* which vertex output maps to this fragment input: */
+#if !USE_INPUT_MAP
+ uint vertSlot;
+ if (setup->firstFpInput == TGSI_SEMANTIC_POSITION) {
+ if (fragSlot == 0) {
+ setup_fragcoord_coeff(setup);
+ continue;
+ }
+ vertSlot = fragSlot;
+ }
+ else {
+ vertSlot = fragSlot + 1;
}
+
+#else
+ uint vertSlot = fs->input_map[fragSlot];
+
+ if (vertSlot == 0) {
+ /* special case: shader is reading gl_FragCoord */
+ /* XXX with a new INTERP_POSITION token, we could just add a
+ * new case to the switch below.
+ */
+ setup_fragcoord_coeff(setup);
+ }
+ else {
+#endif
+ uint j;
+ switch (interp[vertSlot]) {
+ case INTERP_CONSTANT:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ const_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_LINEAR:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ tri_linear_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_PERSPECTIVE:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ tri_persp_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ default:
+ /* invalid interp mode */
+ assert(0);
+ }
+#if USE_INPUT_MAP
+ }
+#endif
}
}
@@ -660,17 +725,18 @@ static void setup_tri( struct draw_stage *stage,
* for a line.
*/
static void
-line_linear_coeff(struct setup_stage *setup, unsigned slot, unsigned i)
+line_linear_coeff(struct setup_stage *setup,
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- const float da = setup->vmax->data[slot][i] - setup->vmin->data[slot][i];
+ const float da = setup->vmax->data[vertSlot][i] - setup->vmin->data[vertSlot][i];
const float dadx = da * setup->emaj.dx * setup->oneoverarea;
const float dady = da * setup->emaj.dy * setup->oneoverarea;
- setup->coef[slot].dadx[i] = dadx;
- setup->coef[slot].dady[i] = dady;
- setup->coef[slot].a0[i]
- = (setup->vmin->data[slot][i] -
- (dadx * (setup->vmin->data[0][0] - 0.5f) +
- dady * (setup->vmin->data[0][1] - 0.5f)));
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
+ coef->a0[i] = (setup->vmin->data[vertSlot][i] -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
}
@@ -679,21 +745,21 @@ line_linear_coeff(struct setup_stage *setup, unsigned slot, unsigned i)
* for a line.
*/
static void
-line_persp_coeff(struct setup_stage *setup, unsigned slot, unsigned i)
+line_persp_coeff(struct setup_stage *setup,
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
/* XXX double-check/verify this arithmetic */
- const float a0 = setup->vmin->data[slot][i] * setup->vmin->data[0][3];
- const float a1 = setup->vmax->data[slot][i] * setup->vmin->data[0][3];
+ const float a0 = setup->vmin->data[vertSlot][i] * setup->vmin->data[0][3];
+ const float a1 = setup->vmax->data[vertSlot][i] * setup->vmin->data[0][3];
const float da = a1 - a0;
const float dadx = da * setup->emaj.dx * setup->oneoverarea;
const float dady = da * setup->emaj.dy * setup->oneoverarea;
- setup->coef[slot].dadx[i] = dadx;
- setup->coef[slot].dady[i] = dady;
- setup->coef[slot].a0[i]
- = (setup->vmin->data[slot][i] -
- (dadx * (setup->vmin->data[0][0] - 0.5f) +
- dady * (setup->vmin->data[0][1] - 0.5f)));
-
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
+ coef->a0[i] = (setup->vmin->data[vertSlot][i] -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
}
@@ -705,7 +771,8 @@ static INLINE void
setup_line_coefficients(struct setup_stage *setup, struct prim_header *prim)
{
const enum interp_mode *interp = setup->softpipe->vertex_info.interp_mode;
- unsigned slot, j;
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
+ unsigned fragSlot;
/* use setup->vmin, vmax to point to vertices */
setup->vprovoke = prim->v[1];
@@ -720,31 +787,39 @@ setup_line_coefficients(struct setup_stage *setup, struct prim_header *prim)
/* z and w are done by linear interpolation:
*/
- line_linear_coeff(setup, 0, 2);
- line_linear_coeff(setup, 0, 3);
+ line_linear_coeff(setup, &setup->posCoef, 0, 2);
+ line_linear_coeff(setup, &setup->posCoef, 0, 3);
/* setup interpolation for all the remaining attributes:
*/
- for (slot = 1; slot < setup->quad.nr_attrs; slot++) {
- switch (interp[slot]) {
- case INTERP_CONSTANT:
- for (j = 0; j < NUM_CHANNELS; j++)
- const_coeff(setup, slot, j);
- break;
-
- case INTERP_LINEAR:
- for (j = 0; j < NUM_CHANNELS; j++)
- line_linear_coeff(setup, slot, j);
- break;
-
- case INTERP_PERSPECTIVE:
- for (j = 0; j < NUM_CHANNELS; j++)
- line_persp_coeff(setup, slot, j);
- break;
-
- default:
- /* invalid interp mode */
- assert(0);
+ for (fragSlot = 0; fragSlot < setup->quad.nr_attrs; fragSlot++) {
+ /* which vertex output maps to this fragment input: */
+ uint vertSlot = fs->input_map[fragSlot];
+
+ if (vertSlot == 0) {
+ /* special case: shader is reading gl_FragCoord */
+ setup_fragcoord_coeff(setup);
+ }
+ else {
+ uint j;
+ switch (interp[vertSlot]) {
+ case INTERP_CONSTANT:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ const_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_LINEAR:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ line_linear_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_PERSPECTIVE:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ line_persp_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+
+ default:
+ /* invalid interp mode */
+ assert(0);
+ }
}
}
}
@@ -910,14 +985,15 @@ setup_line(struct draw_stage *stage, struct prim_header *prim)
static void
-point_persp_coeff(struct setup_stage *setup, const struct vertex_header *vert,
- uint slot, uint i)
+point_persp_coeff(struct setup_stage *setup,
+ const struct vertex_header *vert,
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- assert(slot < PIPE_MAX_SHADER_INPUTS);
assert(i <= 3);
- setup->coef[slot].dadx[i] = 0.0F;
- setup->coef[slot].dady[i] = 0.0F;
- setup->coef[slot].a0[i] = vert->data[slot][i] * vert->data[0][3];
+ coef->dadx[i] = 0.0F;
+ coef->dady[i] = 0.0F;
+ coef->a0[i] = vert->data[vertSlot][i] * vert->data[0][3];
}
@@ -930,6 +1006,7 @@ static void
setup_point(struct draw_stage *stage, struct prim_header *prim)
{
struct setup_stage *setup = setup_stage( stage );
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
const enum interp_mode *interp = setup->softpipe->vertex_info.interp_mode;
const struct vertex_header *v0 = prim->v[0];
const int sizeAttr = setup->softpipe->psize_slot;
@@ -940,7 +1017,7 @@ setup_point(struct draw_stage *stage, struct prim_header *prim)
const boolean round = (boolean) setup->softpipe->rasterizer->point_smooth;
const float x = v0->data[0][0]; /* Note: data[0] is always position */
const float y = v0->data[0][1];
- unsigned slot, j;
+ uint fragSlot;
/* For points, all interpolants are constant-valued.
* However, for point sprites, we'll need to setup texcoords appropriately.
@@ -959,22 +1036,36 @@ setup_point(struct draw_stage *stage, struct prim_header *prim)
* probably should be ruled out on that basis.
*/
setup->vprovoke = prim->v[0];
- const_coeff(setup, 0, 2);
- const_coeff(setup, 0, 3);
- for (slot = 1; slot < setup->quad.nr_attrs; slot++) {
- switch (interp[slot]) {
- case INTERP_CONSTANT:
- /* fall-through */
- case INTERP_LINEAR:
- for (j = 0; j < NUM_CHANNELS; j++)
- const_coeff(setup, slot, j);
- break;
- case INTERP_PERSPECTIVE:
- for (j = 0; j < NUM_CHANNELS; j++)
- point_persp_coeff(setup, v0, slot, j);
- break;
- default:
- assert(0);
+
+ /* setup Z, W */
+ const_coeff(setup, &setup->posCoef, 0, 2);
+ const_coeff(setup, &setup->posCoef, 0, 3);
+
+ for (fragSlot = 0; fragSlot < setup->quad.nr_attrs; fragSlot++) {
+ /* which vertex output maps to this fragment input: */
+ uint vertSlot = fs->input_map[fragSlot];
+
+ if (vertSlot == 0) {
+ /* special case: shader is reading gl_FragCoord */
+ setup_fragcoord_coeff(setup);
+ }
+ else {
+ uint j;
+ switch (interp[vertSlot]) {
+ case INTERP_CONSTANT:
+ /* fall-through */
+ case INTERP_LINEAR:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ const_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_PERSPECTIVE:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ point_persp_coeff(setup, setup->vprovoke,
+ &setup->coef[fragSlot], vertSlot, j);
+ break;
+ default:
+ assert(0);
+ }
}
}
@@ -1108,9 +1199,12 @@ static void setup_begin( struct draw_stage *stage )
{
struct setup_stage *setup = setup_stage(stage);
struct softpipe_context *sp = setup->softpipe;
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
setup->quad.nr_attrs = setup->softpipe->nr_frag_attrs;
+ setup->firstFpInput = fs->input_semantic_name[0];
+
sp->quad.first->begin(sp->quad.first);
}
@@ -1151,6 +1245,7 @@ struct draw_stage *sp_draw_render_stage( struct softpipe_context *softpipe )
setup->stage.destroy = render_destroy;
setup->quad.coef = setup->coef;
+ setup->quad.posCoef = &setup->posCoef;
return &setup->stage;
}
diff --git a/src/mesa/pipe/softpipe/sp_quad_earlyz.c b/src/mesa/pipe/softpipe/sp_quad_earlyz.c
index 3abd1f1fb9..22ea99049f 100644
--- a/src/mesa/pipe/softpipe/sp_quad_earlyz.c
+++ b/src/mesa/pipe/softpipe/sp_quad_earlyz.c
@@ -47,9 +47,9 @@ earlyz_quad(
{
const float fx = (float) quad->x0;
const float fy = (float) quad->y0;
- const float dzdx = quad->coef[0].dadx[2];
- const float dzdy = quad->coef[0].dady[2];
- const float z0 = quad->coef[0].a0[2] + dzdx * fx + dzdy * fy;
+ const float dzdx = quad->posCoef->dadx[2];
+ const float dzdy = quad->posCoef->dady[2];
+ const float z0 = quad->posCoef->a0[2] + dzdx * fx + dzdy * fy;
quad->outputs.depth[0] = z0;
quad->outputs.depth[1] = z0 + dzdx;
diff --git a/src/mesa/pipe/softpipe/sp_quad_fs.c b/src/mesa/pipe/softpipe/sp_quad_fs.c
index da590b256a..6e7e7eb074 100644
--- a/src/mesa/pipe/softpipe/sp_quad_fs.c
+++ b/src/mesa/pipe/softpipe/sp_quad_fs.c
@@ -74,15 +74,49 @@ quad_shade_stage(struct quad_stage *qs)
}
+/**
+ * Compute quad X,Y,Z,W for the four fragments in a quad.
+ * Note that we only need to "compute" X and Y for the upper-left fragment.
+ * We could do less work if we're not depth testing, or there's no
+ * perspective-corrected attributes, but that's seldom.
+ */
+static void
+setup_pos_vector(const struct tgsi_interp_coef *coef,
+ float x, float y,
+ struct tgsi_exec_vector *quadpos)
+{
+ uint chan;
+ /* do X */
+ quadpos->xyzw[0].f[0] = x;
+ /* do Y */
+ quadpos->xyzw[1].f[0] = y;
+ /* do Z and W for all fragments in the quad */
+ for (chan = 2; chan < 4; chan++) {
+ const float dadx = coef->dadx[chan];
+ const float dady = coef->dady[chan];
+ const float a0 = coef->a0[chan] + dadx * x + dady * y;
+ quadpos->xyzw[chan].f[0] = a0;
+ quadpos->xyzw[chan].f[1] = a0 + dadx;
+ quadpos->xyzw[chan].f[2] = a0 + dady;
+ quadpos->xyzw[chan].f[3] = a0 + dadx + dady;
+ }
+}
+
+
typedef void (XSTDCALL *codegen_function)(
const struct tgsi_exec_vector *input,
struct tgsi_exec_vector *output,
float (*constant)[4],
struct tgsi_exec_vector *temporary,
- const struct tgsi_interp_coef *coef );
+ const struct tgsi_interp_coef *coef
+#if 0
+ ,const struct tgsi_exec_vector *quadPos
+#endif
+ );
+
-/* This should be done by the fragment shader execution unit (code
- * generated from the decl instructions). Do it here for now.
+/**
+ * Execute fragment shader for the four fragments in the quad.
*/
static void
shade_quad(
@@ -91,33 +125,15 @@ shade_quad(
{
struct quad_shade_stage *qss = quad_shade_stage( qs );
struct softpipe_context *softpipe = qs->softpipe;
- const float fx = (float) quad->x0;
- const float fy = (float) quad->y0;
struct tgsi_exec_machine *machine = &qss->machine;
- /* Consts does not require 16 byte alignment. */
+ /* Consts do not require 16 byte alignment. */
machine->Consts = softpipe->mapped_constants[PIPE_SHADER_FRAGMENT];
machine->InterpCoefs = quad->coef;
-#if 1 /* XXX only do this if the fp really reads fragment.position */
- machine->Inputs[0].xyzw[0].f[0] = fx;
- machine->Inputs[0].xyzw[0].f[1] = fx + 1.0f;
- machine->Inputs[0].xyzw[0].f[2] = fx;
- machine->Inputs[0].xyzw[0].f[3] = fx + 1.0f;
-
- /* XXX for OpenGL we need to invert the Y pos here (y=0=top).
- * but that'll mess up linear/perspective interpolation of other
- * attributes...
- */
- machine->Inputs[0].xyzw[1].f[0] = fy;
- machine->Inputs[0].xyzw[1].f[1] = fy;
- machine->Inputs[0].xyzw[1].f[2] = fy + 1.0f;
- machine->Inputs[0].xyzw[1].f[3] = fy + 1.0f;
-#endif
-
- machine->QuadX = quad->x0;
- machine->QuadY = quad->y0;
+ /* Compute X, Y, Z, W vals for this quad */
+ setup_pos_vector(quad->posCoef, quad->x0, quad->y0, &machine->QuadPos);
/* run shader */
#if defined(__i386__) || defined(__386__)
@@ -130,9 +146,9 @@ shade_quad(
machine->Temps,
machine->InterpCoefs
#if 0
- ,quad->x0, quad->y0
+ ,machine->QuadPos
#endif
- );
+ );
quad->mask &= ~(machine->Temps[TGSI_EXEC_TEMP_KILMASK_I].xyzw[TGSI_EXEC_TEMP_KILMASK_C].u[0]);
}
else
diff --git a/src/mesa/pipe/softpipe/sp_state_derived.c b/src/mesa/pipe/softpipe/sp_state_derived.c
index c4f1a0a01a..736ac1c33b 100644
--- a/src/mesa/pipe/softpipe/sp_state_derived.c
+++ b/src/mesa/pipe/softpipe/sp_state_derived.c
@@ -51,18 +51,11 @@ static void calculate_vertex_layout( struct softpipe_context *softpipe )
memset(vinfo, 0, sizeof(*vinfo));
- if (softpipe->depth_stencil->depth.enabled)
- softpipe->need_z = TRUE;
- else
- softpipe->need_z = FALSE;
- softpipe->need_w = FALSE;
if (fs->input_semantic_name[0] == TGSI_SEMANTIC_POSITION) {
/* Need Z if depth test is enabled or the fragment program uses the
* fragment position (XYZW).
*/
- softpipe->need_z = TRUE;
- softpipe->need_w = TRUE;
}
softpipe->psize_slot = -1;
@@ -121,7 +114,6 @@ static void calculate_vertex_layout( struct softpipe_context *softpipe )
case TGSI_SEMANTIC_GENERIC:
/* this includes texcoords and varying vars */
draw_emit_vertex_attr(vinfo, FORMAT_4F, INTERP_PERSPECTIVE);
- softpipe->need_w = TRUE;
break;
default:
@@ -129,7 +121,11 @@ static void calculate_vertex_layout( struct softpipe_context *softpipe )
}
}
+#if 00
softpipe->nr_frag_attrs = vinfo->num_attribs;
+#else
+ softpipe->nr_frag_attrs = fs->num_inputs;
+#endif
/* We want these after all other attribs since they won't get passed
* to the fragment shader. All prior vertex output attribs should match
diff --git a/src/mesa/pipe/tgsi/exec/tgsi_exec.c b/src/mesa/pipe/tgsi/exec/tgsi_exec.c
index 03997f9099..1f43f3643e 100644
--- a/src/mesa/pipe/tgsi/exec/tgsi_exec.c
+++ b/src/mesa/pipe/tgsi/exec/tgsi_exec.c
@@ -1352,7 +1352,8 @@ linear_interpolation(
unsigned attrib,
unsigned chan )
{
- const float x = mach->QuadX, y = mach->QuadY;
+ const float x = mach->QuadPos.xyzw[0].f[0];
+ const float y = mach->QuadPos.xyzw[1].f[0];
const float dadx = mach->InterpCoefs[attrib].dadx[chan];
const float dady = mach->InterpCoefs[attrib].dady[chan];
const float a0 = mach->InterpCoefs[attrib].a0[chan] + dadx * x + dady * y;
@@ -1368,14 +1369,17 @@ perspective_interpolation(
unsigned attrib,
unsigned chan )
{
- const float x = mach->QuadX, y = mach->QuadY;
+ const float x = mach->QuadPos.xyzw[0].f[0];
+ const float y = mach->QuadPos.xyzw[1].f[0];
const float dadx = mach->InterpCoefs[attrib].dadx[chan];
const float dady = mach->InterpCoefs[attrib].dady[chan];
const float a0 = mach->InterpCoefs[attrib].a0[chan] + dadx * x + dady * y;
- mach->Inputs[attrib].xyzw[chan].f[0] = a0 / mach->Inputs[0].xyzw[3].f[0];
- mach->Inputs[attrib].xyzw[chan].f[1] = (a0 + dadx) / mach->Inputs[0].xyzw[3].f[1];
- mach->Inputs[attrib].xyzw[chan].f[2] = (a0 + dady) / mach->Inputs[0].xyzw[3].f[2];
- mach->Inputs[attrib].xyzw[chan].f[3] = (a0 + dadx + dady) / mach->Inputs[0].xyzw[3].f[3];
+ const float *w = mach->QuadPos.xyzw[3].f;
+ /* divide by W here */
+ mach->Inputs[attrib].xyzw[chan].f[0] = a0 / w[0];
+ mach->Inputs[attrib].xyzw[chan].f[1] = (a0 + dadx) / w[1];
+ mach->Inputs[attrib].xyzw[chan].f[2] = (a0 + dady) / w[2];
+ mach->Inputs[attrib].xyzw[chan].f[3] = (a0 + dadx + dady) / w[3];
}
@@ -1400,17 +1404,6 @@ exec_declaration(
last = decl->u.DeclarationRange.Last;
mask = decl->Declaration.UsageMask;
- /* Do not touch WPOS.xy */
- if( first == 0 ) {
- mask &= ~TGSI_WRITEMASK_XY;
- if( mask == TGSI_WRITEMASK_NONE ) {
- first++;
- if( first > last ) {
- return;
- }
- }
- }
-
switch( decl->Interpolation.Interpolate ) {
case TGSI_INTERPOLATE_CONSTANT:
interp = constant_interpolation;
diff --git a/src/mesa/pipe/tgsi/exec/tgsi_exec.h b/src/mesa/pipe/tgsi/exec/tgsi_exec.h
index 8d166bb5f4..db92e282df 100644
--- a/src/mesa/pipe/tgsi/exec/tgsi_exec.h
+++ b/src/mesa/pipe/tgsi/exec/tgsi_exec.h
@@ -170,7 +170,6 @@ struct tgsi_exec_machine
struct tgsi_exec_vector *Inputs;
struct tgsi_exec_vector *Outputs;
const struct tgsi_token *Tokens;
- float QuadX, QuadY; /**< for frag progs only */
unsigned Processor;
/* GEOMETRY processor only. */
@@ -178,6 +177,7 @@ struct tgsi_exec_machine
/* FRAGMENT processor only. */
const struct tgsi_interp_coef *InterpCoefs;
+ struct tgsi_exec_vector QuadPos;
/* Conditional execution masks */
uint CondMask; /**< For IF/ELSE/ENDIF */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 03:48:48 +0000